Boating Essentials - Coated Mushroom Anchor - 10 lb. - BE-AN-50013-DP. This 10-pound mushroom anchor from T-H Marine is coated, making it an ideal choice for protecting the surface of your boat. The drain holes also make cleaning and retrieval a snap. Best for use on sandy or muddy bottoms. Whether you're anchoring in the sandy bottoms of a bay or the muddy bottoms of a river, you'll be glad you have a mushroom anchor. The 10-lb coated mushroom boat anchor with drainage holes is perfect for the job. The protective coating prevents scratching your boat and the affordable price makes it easy on your wallet.. Features:. Weight - 10 Pounds. Coated anchor protects the boat surfaces. Drain holes for clean and easy retrieval. Best in sandy or muddy bottoms